AdGuardHome-High Average processing time and Network Errors

[mush2020]

I'm running AdGuardHome recently with Unbound
Seems there is slowness in DNS requests.
Everyday processing time is above 250ms(attached screen print)
I see some errors(attached), it started after enabling encryption, not sure what network error.
Although all settings under Encryption and certs are ok with no errors on GUI.
How to reduce DNS query average processing time?
Where are the logs to see error generated

Also nslookup error for parental_block_host and safebrowsing_block_host
DNS timeout occurs if I enable either of these
-Security web service
-Parental control

>nslookup
Default Server:  UnKnown
Address:  192.168.10.254

> family-block.dns.adguard.com
Server:  UnKnown
Address:  192.168.10.254

*** UnKnown can't find family-block.dns.adguard.com: Non-existent domain
> family-block.dns.adguard.com
Server:  UnKnown
Address:  192.168.10.254

*** UnKnown can't find family-block.dns.adguard.com: Non-existent domain

Request for community assistance